Medtronic's revenue of $7.1bn for the second fiscal quarter of 2018 was down 4% year-over-year on an as-reported basis, but up 4% on a comparable constant-currency basis. –It would have been even greater if not for the hurricane that hindered manufacturing operations in Puerto Rico, the company reported Nov 21.

In an interview with Medtech Insight, the lead investigator of SURTAVI, an ongoing trial of Medtronic's CoreValve in intermediate risk patents, says transcatheter aortic valve is continuously improving and will probably soon be indicated for even low-risk patients, but that surgical valve replacement will have an important role to play for the foreseeable future.

Minimally invasive glaucoma surgery specialist Glaukos saw its stock leap 40% in the wake of a worldwide recall by much bigger rival Alcon of its CyPass microstent.